Agreement of the formulas with the
complete analysis, 38-42
Air, composition of, 175

determination of the mass of,
blown through the twyres, 37,
38

of blast, weight of, 60

weight of, in blast, 65, 68, 72, 75
Alfreton furnace, 157
Analysis and formulas, agreement of,
38-42

application of new method, to a
French blast furnace, 118-121
of gases, 45

of technical economy, 172
Andrews, Prof., experiments, 147
Application of new method of analysis
to a French blast furnace, 118-121
Askam-in-Furness, furnace, 23
Aubertot, M., application of waste
gases by, 145
Aubuisson, 38

Austria, height of blast furnaces in, 18

oxygen and carbon in the
gases of the blast furnace,
158, 159, 160

on the action proper of blast
furnace, 160-164

On the Development and Ap-
plication of Heat in Iron
Blast Furnaces, 156

theory of the blast furnace,
140

Berthier on waste gases, 145
Big furnaces, yield of, 21, 22
Blast, caloric carried in by, 61

consideration of weight of, 169
furnace, action proper of, 160-164

calorific phenomena of, 156
determination of the caloric
received by, 56

experiments of M. Schinz on,

148-152

phenomena, tables, and me-
moranda for calculating,
175-180

theory of, 140-174

furnaces, determination of the

caloric consumed in, 46-47
principal reactions in, 24-26
recent modifications in, 17
successive enlargements of,
18

influence of highly heated, 101-
116

influence of variations of the

temperature of, 101

weight of air in, 65, 68, 72, 75
Boulanger and Dulait's experiments
on the heat in pig-iron, 51
Budd, James P., patent for applica-
tion of heat, flames, and gases of
the blast furnace to heating hot-
blast stoves, 145, 146

Bunsen's experiments on the compo-
sition of gases of the furnace, 143,
144, 146

Bunsen and Playfair on the gases
evolved from iron furnaces, 157, 158

Ablast furnaces, 26-29
ALORIC absorbed and given off in

by the fusion of the slag and
the decomposition of the
limestone, 52-54

by the reduction of the ores
and the fusion of the pig-
iron, 47-52

in the reduction of ores,
fluxes, etc., 49, 50

of peroxide of iron, 48
arising from the oxidation of
silicium, phosphorus, etc., 49
carried in by blast, 61, 65, 68, 72,
75

off by radiation from walls
of furnace, 131

off by the gases, 63
consumed in blast furnaces, 46-47
determination of, received by a
blast furnace, 56

lost by radiation from the walls
of furnace, etc., 55, 56
of combustion, determination of,
176

more economical to get, by a
good design of furnace than by
an over-heated blast, 115
produced in the furnace, 61, 65,
69, 72, 75

required in iron-smelting, 165–
174

taken for reduction of the ores, 62
Calorific effects, factors of, 170, 171,
172

efficiency of the furnace, index
to, 166

phenomena of the blast furnace,
156

Calculations of blast furnace phe-
nomena, 175-180

Capacity, great, influence of, 88-93
Carbon and iron, 176

deposition, 164

impregnation, 163

Carbonic acid, 96

oxide, dissociation of, 162

Deville, H., and Cailletet, experi-
ments of, 25

Diameters of furnaces, 17

Dowlais Ironworks, economy of fuel
at, 174

Driving furnace, rate of, 173

139

Charging French furnaces, 130

Chemical equivalents, 175

Clarence furnace, blast at, 173

Dulait and Boulanger's experiments

on slags, 53

Dulong's experiments on the gases,

144, 146

EAR

thod of analysis to a French,
118-121

caloric produced in, 64, 65, 69
elements of the working of, 121,

122

of Montluçon, 129
theory of, 140-174

of Vienne in the Isère, 86
Furnaces, after a certain height has
been attained, no longer any
advantage in enlarging, 101

at Pont-Evêque, 86
big, yield of, 21, 22

economical working of, how it
varies, 29-33

French, manner of charging, 130
section of, 130

large and small, 81

measure or index of the working
of, 33, 34

reduction of height of, 23
synoptical table of results ob-
tained in the working of vari-
ous, 78

Fusion of slag, caloric absorbed by,
52-54

of slags, 63

NASEOUS current in furnaces, 24
of blast furnaces, 93
currents of blast furnaces, com-
position of, 135

Gases, analysis of, 45
at Seraing, 42

beyond a certain height, the
temperature of, does not di-
minish by reason of dissocia-
tion of oxide of carbon, 93-
101

caloric carried off by the, 63
determination of the mean tem-
perature of, 45

escaping from the furnace, 154
weight and composition of,
34-38

evolved from iron furnaces, Bun-
sen and Playfair on, 157, 158
in the economical working of
furnaces, 29

method of taking specimens of,
42-46

of blast furnace, Bunsen's expe-
riments on the composition of,
143, 144

Gases of blast furnace, Dr. Percy on

analysis of, 147
Ebelmen's experiments
on the composition of,
144, 146

of the furnaces at Clarence works,
39, 40

sensible heat carried off by, 54,
55

specific heat of, 178
waste of, furnace, 145
weight of dry, 60

weights of, 64, 68, 71, 74
Gillot's experiments on slags, 53

on the heat in pig-iron, 51
Gjers, J., account of development of
Cleveland furnaces, 20

Gmelin, L., Hand Book of Chemistry,
146

Great height and capacity, influence
of, 88-93

Gruner, M., and I. L. Bell, 170, 171,
172

EARTH too wide in England, 130

HE

Heat, quantities of, 177

Height of furnaces, 17

101-116

ores, equivalents for, 176

in the reduction of, 49, 50
refractory, 136

Ormesby furnace, 91

examples of working of, 67,
78, 79

of 1867

compared

French, 130

with

monster furnace at, 20
Osnabrück furnace, fuel used at, 174
Oxide of iron, reduction of, 95
Oxygen and carbon, decrease of, in
blast furnace, 158, 159, 160
supplied to the gases of the fur-
nace, 106

Dr., examination of figures

174

KARSTEN, 38

on the theory of the blast fur
nace, 141, 142, 143

AMPADIUS, W. A., on the
theory of the blast furnace, 140,
143, 147, 153

gases, 158, 159

Metallurgy of Iron and Steel,
importance of, 147

on analysis of blast furnace gases,
147

on comparison of fuels, 139

on composition of gaseous cur-
rents, 135

on melting points of metals and
alloys, 138